“So someone start up the next channel that allows both (actually more than two) sides to be presented.”
It would be an utter failure. The country is so polarized that people simply don’t trust/believe the other side.
It’s the same thing with talk radio. Each station is either conservative or liberal.
I think the rating of a show depend heavily on spillover from the previous show. If a conservative show is followed by a liberal show there won’t be much of a spillover and vice versa.
So... with the Left divided among CNN, MSNBC, Bloomberg, the networks, etc... and the Right only having Fox... that has made Fox easily #1 for cable news for years now. You're saying that if Fox leaves the Right, and someone else takes their place, the new channel won't be #1 easily? They have no competition for half of the national audience. It would be a massive success.